On 10/27/2017 07:39 PM, tang.junhui@xxxxxxxxxx wrote: > From: "tang.junhui" <tang.junhui@xxxxxxxxxx> > > Currently, Cache missed IOs are identified by s->cache_miss, but actually, > there are many situations that missed IOs are not assigned a value for > s->cache_miss in cached_dev_cache_miss(), for example, a bypassed IO > (s->iop.bypass = 1), or the cache_bio allocate failed. In these situations, > it will go to out_put or out_submit, and s->cache_miss is null, which leads > bch_mark_cache_accounting() to treat this IO as a hit IO. > > Signed-off-by: tang.junhui <tang.junhui@xxxxxxxxxx> Reviewed-by: Michael Lyle <mlyle@xxxxxxxx> Applied to my local tree for test. Thanks! -mpl
